.d1 {
    font-size: 100px;
}

.button_1o {
    position: fixed;
    height: 180px;
    background: url('../image/btn_back_bg.png') -39px 0px no-repeat;
    background-size: 999px 260px;
    width: 920px;
    bottom: 90px;
    margin-left: 80px;
    z-index: 1;
}

.text_2o {
    width: 94px;
    height: 46px;
    overflow-wrap: break-word;
    color: rgba(255, 255, 255, 1);
    font-size: 48px;
    font-family: MicrosoftYaHei;
    font-weight: NaN;
    text-align: center;
    white-space: nowrap;
    line-height: 60px;
    margin: 68px 0 0 411px;
}

.flex-col {
    display: flex;
    flex-direction: column;
}